ipc: handle unsupported IPC in sync request

[dpdk.git] / lib / librte_eal / common / hotplug_mp.c

diff --git a/lib/librte_eal/common/hotplug_mp.c b/lib/librte_eal/common/hotplug_mp.c
index 0461651..4f316ba 100644 (file)
--- a/lib/librte_eal/common/hotplug_mp.c
+++ b/lib/librte_eal/common/hotplug_mp.c
@@ -4,6 +4,7 @@
 #include <string.h>
 
 #include <rte_eal.h>
+#include <rte_errno.h>
 #include <rte_alarm.h>
 #include <rte_string_fns.h>
 #include <rte_devargs.h>
@@ -404,7 +405,11 @@ int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req)
 
        ret = rte_mp_request_sync(&mp_req, &mp_reply, &ts);
        if (ret != 0) {
-               RTE_LOG(ERR, EAL, "rte_mp_request_sync failed\n");
+               /* if IPC is not supported, behave as if the call succeeded */
+               if (rte_errno != ENOTSUP)
+                       RTE_LOG(ERR, EAL, "rte_mp_request_sync failed\n");
+               else
+                       ret = 0;
                return ret;
        }
 
@@ -440,7 +445,8 @@ int rte_mp_dev_hotplug_init(void)
        if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
                ret = rte_mp_action_register(EAL_DEV_MP_ACTION_REQUEST,
                                        handle_secondary_request);
-               if (ret != 0) {
+               /* primary is allowed to not support IPC */
+               if (ret != 0 && rte_errno != ENOTSUP) {
                        RTE_LOG(ERR, EAL, "Couldn't register '%s' action\n",
                                EAL_DEV_MP_ACTION_REQUEST);
                        return ret;